Here is the JIRA and PR for supporting PolynomialExpansion with degree 1, and it has been merged.
https://issues.apache.org/jira/browse/SPARK-13338 https://github.com/apache/spark/pull/11216 2016-05-02 9:20 GMT-07:00 Nick Pentreath <nick.pentre...@gmail.com>: > There is a JIRA and PR around for supporting polynomial expansion with > degree 1. Offhand I can't recall if it's been merged > On Mon, 2 May 2016 at 17:45, Julio Antonio Soto de Vicente <ju...@esbet.es> > wrote: > >> Hi, >> >> Same goes for the PolynomialExpansion in org.apache.spark.ml.feature. It >> would be dice to cross-validate with degree 1 polynomial expansion (this >> is, with no expansion at all) vs other degree polynomial expansions. >> Unfortunately, degree is forced to be >= 2. >> >> -- >> Julio >> >> > El 2 may 2016, a las 9:05, Rahul Tanwani <tanwanira...@gmail.com> >> escribió: >> > >> > Hi, >> > >> > In certain cases (mostly due to time constraints), we need some model >> to run >> > without cross validation. In such a case, since k-fold value for cross >> > validator cannot be one, we have to maintain two different code paths to >> > achieve both the scenarios (with and without cross validation). >> > >> > Would it be an okay idea to generalize the cross validator so it can >> work >> > with k-fold value of 1? The only purpose for this is to avoid >> maintaining >> > two different code paths and in functionality it should be similar to >> as if >> > the cross validation is not present. >> > >> > >> > >> > >> > >> > -- >> > View this message in context: >> http://apache-spark-developers-list.1001551.n3.nabble.com/Cross-Validator-to-work-with-K-Fold-value-of-1-tp17404.html >> > Sent from the Apache Spark Developers List mailing list archive at >> Nabble.com. >> > >> > --------------------------------------------------------------------- >> > To unsubscribe, e-mail: dev-unsubscr...@spark.apache.org >> > For additional commands, e-mail: dev-h...@spark.apache.org >> > >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@spark.apache.org >> For additional commands, e-mail: dev-h...@spark.apache.org >> >>
